Fluorescent Calcite crystals from Trepča Mine, Trepča complex, Mitrovica, Mitrovica District, Kosovo. Presenting a beautiful example from the famous Trepča Mine complex in Kosovo: this specimen features fluorescent calcite crystals. Under ultraviolet light, the calcite displays a vibrant red-orange glow—an eye-catching highlight for collectors and enthusiasts alike. The Trepča Mine is celebrated as one of Europe’s premier mineral localities, renowned for the diversity and beauty of its sulfide minerals. This specimen captures both the visual allure and the rich mining heritage of the region, making it a coveted addition for collectors seeking classic Balkan minerals or a distinctive display piece from Kosovo’s mineralogical crown jewel.